Attachment for earthworking devices



y 1936- R. J. BIVIN ET AL 2,048,054

' ATTACHMENT FOR EARTHWORKING DEVICES Filed Oct. 10, 1954 INVENTORS Rob arl' J. B-win Homer M.Huusl'hn ATI'ORNEYS.

Patented July 21, 1935 orFicE ATTACHMENT FOR EARTHWORKING DEVICES Application October 10, 1934, Serial No. 747,790

6 Claims.

Still another object is to provide an attachment, as last described, which is easily removed, replaced and adjusted.

Another object is to provide a combination sweep and coulter which will protect from wear the frog to which it is attached.

. Another object is to provide a device especially designed to be employed to clean away weed and similar growth, which device will pulverize the soil and will leave a smooth, level surface or a slope, as the user may desire.

Another object is to provide a novel frog, especially adapted for association with the combination coulter and sweep described above.

Other objects and advantages of the invention will be apparent during the course of the following detailed description, taken in connection with the accompanying drawing, forming a part of this specification and in which drawing:

Figure 1 is a perspective view of a conventional cultivator with a pair of the novel combination sweep and coulter attached.

Figure 2 is a perspective view of the assembled novel device, secured to a frog, but separated from the cultivator.

Figure 3 is a perspective view of the disassembled novel device and frog.

Figures 4, 5 and 6 are sections substantially on their respective lines of Figures 2 and 5.

In the drawing, wherein for the purpose of illustration is shown only a preferred embodiment of the invention and wherein similar reference characters designate corresponding parts throughout the several views, the letter A designates a conventional cultivator, the letter B the novel combination sweep and coulter unit, and the letter C a frog for association with the cultivator A and sweep and coulter unit B.

The cultivator A, shown by way of example, includes a pair of rearwardly projecting beams I0, substantially paralleling each other, each beam I 0 carrying, by means of a bracket I I, one or more depending shanks I2, and these may have spring trips I3 associated therewith, each shank II being provided with a heel bolt I4, detachably coupling a conventional sweep (not shown) or shovel (not shown) thereto. Theshanks I2 are usually rotatable and may be adjusted as to distance from the ground. While a riding cultivator is illustrated, it should be understood that the novel device. isepplicable to other types of cultivators.

As for the novel combination sweep and coulter unit B, the same preferably includes two body portions 55 and It, each comprising a rear section I I, a forward section I8 and a coulter section 59. The body portions I5 and I6 preferably differ in length but have features in common.

Each body portion I5 and I6, at its rear section I1, is preferably arcuate in vertical cross section, with the outer faces concave and the inner faces 2I convex. Preferably the convexity of the inner face 2I of the body portion I6 is less than that of the same face of the body portion I5.

Each forward section I8 may show its inner face 22 and outer face 23 substantially straight and substantially paralleling each other. Disposed adjacent the upper edge 24 of each body portion I5 and I6, and at their forward sections I8, may be suitable spaced apart perforations 25 for a purpose later mentioned.

Since the sections I'I, I8 and I9 of each body 2() portion are integral, the coulter section I9 of each body portion I5 or IE extends from the forward section I8 of each body portion in preferably a curve 26, but so that the coulter section I9 forms with the adjoining forward section I8 and rearward section I! substantially an obtuse angle, as shown, for example, in Figure 4.

It will be noted, particularly in Figures 4 and 5, that the coulter section I9 does not only project forwardly of the other sections mentioned, but also projects upwardly beyond the horizontal plane of the upper edges of the sections I1 and I8. Preferably the coulter sections are curved, as shown in Figure 5, being elliptical, with the edges of the coulter section joining the edges of their respective forward sections I8 of the body portions I5 and I6 in curves, as at 21 and 28.

The inner faces 29 of the coulter sections are preferably substantially flat so that they may be placed in a good face-to-face contact As for the edges of the coulter sections, these edges are preferably beveled as at 39, the beveled surfaces diverging from the inner faces 29, so that a cutting edge is provided when the two body portions I5 and I5 are joined together with the faces 29 in face-to-face contact.

In no sense, are the coulter sections simply brackets or arms provided to connect the two sweeps together, and they are not brackets nor arms for the purpose of connecting the sweeps to a frog but they combine the function of arms or brackets for connecting the two sweeps together and also the function of a substantial, sturdy coulter. Attention is specifically directed to Figure 5, where it will be seen how the coulter section I9 projects well above the sections I1 and i8.

Each coulter portion I9 is preferably perforated, as at 3|, with the perforations aligning axially.

Preferably, the rear edge l of the section ll of the body portion I slopes from the upper edge 24 toward the forward section 3, so that said upper and said rear edge form an acute angle. of the section I! of the body portion 16 slopes from the upper edge 24 of that section away from the forward section IQ of that body portion, so that upper edge 24 and rear edge form an obtuse angle.

In at least one other respect the two body portions l5 and E6 differ, for while the upper edge Eand lower edge 36, the latter being preferably sharp, 'ofthe sections i? and E8 of the body portion l B "are substantially parallel, the same edges of the body portion 95 converge from substantiallythe forward end of the section l8'towards the 'rear edge '36.

As an example, the combined length of the sections W and E8 of the body portion 15 are substantially'two and one-half to three times the combined length of the sections 11 and [[8 of the body portion 16.

Thefrog'C ispreferably somewhat fan-shaped, having an upper portion til with a slot'or opening H centered on it's'vertical medial line. The

lower portion 42 of the frog is widened and is eachother, forming points or projections 45. 35

bowed, while the preferablyponcave end edges Q3 and preferably convex bottom edge 44 Join a result, a particularly strong and sturdy frog is provided, spreading outwardly where 1t 'JOlnS the sweep, so that soil will not be apt to drop over the edge of the sweep adjacent the frog, which is 'thepoint'where soil is-apt to accumulate, and as a consequence, fall over the upper edge of the sweep.

A suitable number of "spaced apart perforations 4:5 are provided above' the bottom edge 44, corresponding in number and spacing to the perforations?! in thebody portions f5 and it. The top edge 66 of thefrog is substantially fiat,but due to the'shapeof the body portion 40, is somewhaltbowedyas seen in Figure 3.

' "Suitable means, such as bolts 55) and nuts 5! maybe providedto attach the body portions I5 and it to the frog C, as is apparent from Figure 4.

When assembled, as shown in Figure 2, the portions "33 and C 'maybeattached to a suitable earth'working'device, suchas the cu'ltivatorA, by

' -Since-the-sweeps extend below the edge M of thefrog C, thisarrangement and the curved faces 2taid-inprotecting the frog C against wear.

The arcuate shape of the section I! of the body portions 15 and i6 and the shape of their rear edges 'aid in proper cultivation under modern methods,+-such as the laying of an effective mulch in dry sections.

Froim'theforegoing, it is'apparent that a sweep and "coulte'r unit has been provided, comprising.

buttwo portions, easily assembled or disassem- Conversely, preferably the rear edge 35 bled and'relatively inexpensive to manufacture. Breakage of or undue wear on one section does not entail discarding of the entire combination sweep and coulter, since either body portion IE or it may be renewed without discarding the other portion. The one-piece construction of the body portions l5 and i6 renders the manu- "facture-of the novel attachment more inexpenscope of .the claims.

What is claimed is:

sweeps, each having a forward end'and a -rearward-end, at least one ofsaidsweeps being elon- -1. {In a combination sweep' 'and coulter, two

gate and having an upwardly and outwardly projecting coulter portion at itsforward end, the lateral cross section of said elongatesweepbeing substantially straight adjacent, the coulter por tion and thelateral cross section'of said'elongate sweep being arcuate at its rearward end, and means to secure said sweeps together-with a face of said coulter portion 111' 'fa'certo -fa'ce uma with a portion of the other o'f-saidrsweeps;

2., In -a combination sweep and coulter, two sweeps, each having a forward end and a rearward end, at least one "of said sweeps being elongate and having an upwardly and outwardly projecting coulter portion at its-forward end,'said coulter being integral therewith, the lateral "cross section-of said'elongate sweep being substantially straight adjacent the coulter portion and the 'lateral cross section pf said elongate sweep being] arcuate at its rearward'end, and means to secure said sweeps together with a face 'of 'said coulter portion in face-to-face contact with a portion of the other-of said sweeps. 3. In-a combination sweep; and coulter, two sweeps each having a'main body portion, a forward end, a'rearward end anda-n upwardly and outwardly projecting coulter portion at its forward end, *eachof said coulter portions having an inner face and a 'bevelededge extending in diverging ,relation from said inner face, and

.means to secure saidsweeps together with said inner faces in face-to-face contact and with-said main body portions extending in diverging relation rearwardly of said coulter portion.

'4. In a combinationsweep andcoulter'adapted to be associated in pairs with a cultivator, two sweeps each having a main body portion,'-a forwardend,'a rearward end and-an upwardlyand outwardly projecting coulter portion at its forward end, 'eachof-saidcoulter portions havingan inner. face and a beveled 'edge extending in 'di verging relation from said inner face,-0n'e of said sweeps being substantially longer "than the other and being 'tapered in width towards its rear end,

and means to secure said sweeps together with 7 said inner faces-in face-to-facecontact and'with said mainjbody portions extending in di-verging relation 'rearwardly of said coulter portion.

5. Asian article of manufacture, a sweep of the class described and adapted to be attached to and to-overlap a portion of a froggcomprising an elongate .main'body portion having a being -a curve, w'h'ereby plowed material will 'be coulter section extending upwardly therefrom directed along said main body portion and away from said frog, and the forward edge of said coulter section being beveled.

6. An earth working implement comprising a 5 laterally bowed frog providing a pair of converging surfaces along its lower margin, a pair of sweeps, each sweep being secured to a different one of said surfaces, each sweep being provided with an upwardly extending coulter portion, said sweeps being secured together and in face to face contact at said coulter portions.

ROBERT JALIES BIVIN. HOD/[ER M. HOUSTON. 

